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yunuskerestecioglu

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Hello, I'mYunus Kerestecioglu

I'm a Software Engineer and Full-stack Developer based in Istanbul, Turkey. I love building applications.

My Projects Download CV

About

My educational background and the technical skills I've acquired over the years.

1. Frontend Development

ReactNext.jsVue.jsJavaScriptTypeScriptHTMLCSS

2. Backend Development

Node.jsExpressSpring BootMongoDBSQLFlaskFirebasePHP

3. Database

MongoDBMySQLPostgreSQLFirebase

4. Mobile Development

React NativeFlutter

5. Languages

TurkishEnglishFrench

6. Interests

Software ArchitectureData EngineeringMoviesMusicLEGO

Work

My journey so far in the industry and the milestones I've achieved.

  • SabanciDX

    Jun 2022 – Aug 2022

    Software Engineer

    Internship

    Built real-time fleet tracking capabilities by implementing .NET REST APIs with full test coverage and creating user interface designs in Figma.

    .NET CoreSwaggerFigmaREST API+2 More
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    SabanciDX

    Jun 2022 – Aug 2022

    Software EngineerInternship

    .NET CoreSwaggerFigmaREST APIUnit TestingUI Design
    • Collaborated real-time fleet tracking features for a major Turkish energy firm’s vehicle operations.
    • REST API with full CRUD support and unit test coverage.
    • UI design and wireframes.
  • Siemens

    Sep 2023 – May 2024

    Full-stack Developer

    Part-time

    Delivered digital transformation solutions by building modular enterprise web applications, data pipelines, monitoring tools that optimized factory operations and reduced manual work.

    PhpHTMLCSSJavaScript+4 More
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    Siemens

    Sep 2023 – May 2024

    Full-stack DeveloperPart-time

    PhpHTMLCSSJavaScriptjQueryMySQLPythonDatadog
    • Part of the digital transformation team delivering a modular enterprise system that digitalized factory operations.
    • Implemented both user interfaces and backend services.
    • Production monitoring, error tracking and performance logging.
    • Automated document read/write tasks with data pipelines.
  • Improva

    Dec 2024 – Present

    Technical Consultant

    Full-time

    Built and managed multi-environment cloud integrations, enabling smooth connectivity, user identity propagation, and access management across BTP, on-premise, and cloud systems.

    SAP BTPJavaScriptCloud IntegrationConnectivity+1 More
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    Improva

    Dec 2024 – Present

    Technical ConsultantFull-time

    SAP BTPJavaScriptCloud IntegrationConnectivityDevOps & Environment Management
    • Configured multi-environment cloud infrastructure, including service instances, destinations, and authentication flow.
    • Integrated on-premise and cloud systems via HTTP and RFC protocols.
    • User identity propagation, transporting the logged-in user’s email from Cloud to on-premise backend services.
    • Managed user roles and access control across subaccounts in BTP Cloud environment using role collections and IAS identity services.
    • Maintained technical specifications and documentation.

Projects

Here are some of my recent projects showcasing my skills and experience.

yunuskerestecioglu.com

Sep 2025 - Oct 2025

My personal portfolio website built with Next.js and Tailwind CSS, showcasing my projects, skills, and experience in a clean and responsive design.

Next.jsTypeScriptTailwind CSSResponsive Design
GitHub Repository
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yunuskerestecioglu.com

Sep 2025 - Oct 2025

A personal portfolio website developed using Next.js and TypeScript for a fast and SEO-friendly experience. It features a responsive design with Tailwind CSS, interactive components, and smooth animations to effectively showcase my projects, skills, and professional background.
Next.jsTypeScriptTailwind CSSResponsive Design
Lineup

May 2024 - Oct 2024

A full-stack system with a Python ETL pipeline, NestJS REST API, and Flutter mobile game that consumes scraped soccer data from Transfermarkt for dynamic squad-guessing gameplay.

PythonWeb ScrapingETL PipelineMongoDB+5 More
Repositories
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Lineup

May 2024 - Oct 2024

A full-stack system that combines data engineering, backend services, and mobile development. It scrapes soccer data from Transfermarkt with a Python ETL pipeline, stores and processes it in MongoDB, exposes it via a NestJS REST API with filtering capabilities, and powers a Flutter-based mobile game where users guess team lineups.
PythonWeb ScrapingETL PipelineMongoDBNestJSREST APIFlutterClient–Server ArchitectureMobile Development
Diplomatic Interactions

Mar 2024 - Jun 2024

A web app to visualize diplomatic interactions via cartography, heatmaps, and analytical reports.

Next.jsSemantic UIChart.jsResponsive Design
Repositories
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Diplomatic Interactions

Mar 2024 - Jun 2024

A web application that visualizes diplomatic interactions between countries through interactive maps, charts, and reports, enabling users to explore relationships by various filters and formats.
Next.jsSemantic UIChart.jsResponsive Design
Setting Configurator

Jun 2024 - Jun 2024

A full-stack configuration management app with custom CSS/JavaScript front-end and Firebase Firestore backend, enabling secure, country-specific parameter updates with concurrency control and activity tracking.

Vue.jsExpress.jsREST APIFirebase+3 More
Repositories
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Setting Configurator

Jun 2024 - Jun 2024

A configuration management web application built to streamline parameter editing and deployment across multiple countries, ensuring secure updates, concurrency control, and full traceability of user modifications.
Vue.jsExpress.jsREST APIFirebaseToken VerificationConcurrency ControlResponsive Design
Employee Management Dashboard

Aug 2023 - Aug 2023

A full-stack web application built for corporate project and employee tracking, providing interactive dashboards, skill management, and project assignment with rich data visualizations.

PHPMySQLAJAXjQuery+4 More
GitHub Repository
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Employee Management Dashboard

Aug 2023 - Aug 2023

A full-stack web application built for corporate project and employee tracking, providing interactive dashboards, skill management, and project assignment with rich data visualizations.
PHPMySQLAJAXjQueryREST APISemantic UIDatatablesHighcharts
Birthday Tracker

Jun 2024 - Jun 2024

A birthday tracking app with JWT authentication, providing a secure dashboard for managing and filtering birthday reminders.

NestJSJWT AuthenticationNext.jsBootstrap+2 More
Github Repository
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Birthday Tracker

Jun 2024 - Jun 2024

A web application designed to help users manage and track birthdays of friends and family, featuring authentication, upcoming reminders, and full CRUD support for birthday entries.
NestJSJWT AuthenticationNext.jsBootstrapMongoDBUnit Testing
Watchlist Picker

Jul 2025 - Jul 2025

A web app that scrapes Letterboxd watchlists, integrates TMDB API data, and enables real-time updates with Server-Sent Events and client-side filtering.

Next.jsWeb ScrapingTMDB APISSE+3 More
Repositories
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Watchlist Picker

Jul 2025 - Jul 2025

A web application that enhances movie discovery by scraping a user’s Letterboxd watchlist, enriching it with TMDB data, and providing real-time progress updates and client-side filtering for a personalized experience.
Next.jsWeb ScrapingTMDB APISSEThemingTypeScriptREST API
World Cup Game API

Feb 2024 - Feb 2024

A REST API for a fantasy World Cup game, featuring user management, automated tournament simulations, and leaderboard tracking.

Spring BootMySQLREST APICron Jobs+1 More
GitHub Repository
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World Cup Game API

Feb 2024 - Feb 2024

A REST API that powers a fantasy World Cup simulation, managing users, tournaments, rankings, and rewards with automated daily simulations.
Spring BootMySQLREST APICron JobsRewards System
Cloud Computing Project

Apr 2023 - May 2023

Deployed a full-stack web app on Google Cloud with a Dockerized backend on Cloud Run, MongoDB, and a front-end separately hosted in VMs.

Google Cloud PlatformGoogle Cloud RunDockerVirtual Machines+1 More
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Cloud Computing Project

Apr 2023 - May 2023

A cloud-based web application deployed on Google Cloud, featuring a Dockerized backend on Cloud Run, a MongoDB database on Compute Engine, and a front-end hosted on a VM for scalable and reliable performance.
Google Cloud PlatformGoogle Cloud RunDockerVirtual MachinesContainerization

    Contact with Me

    Address:

    Istanbul, Turkey

    My Email:

    yunuskrt@gmail.com

    Call Me Now:

    +90 534 798 06 73

    Contact with Me

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    yunuskerestecioglu

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